Abstract

Water treatment apparatus (10) comprising a buoyant body (11) adapted to float on a body of water, water treatment chamber means defined by a tank (12) supported by the buoyant body (11), at least portion of the tank (12) extending in use into the body of water, the tank (12) containing media carrying bacteria for treatment of water in the body of water, means (18) for pumping water from the body of water to the upper end of the tank (12) for flow through the tank (12) whereby said water is exposed to bacteria in the tank (12) and the lower end of the tank (12) being open for directing treated water back into the body of water.

IPC Classes  ?

• C02F 3/24 - Activated sludge processes using free-fall aeration or spraying

Abstract

Water purification or treatment apparatus (410) including a plurality of elongated water treatment chambers (433), each chamber (433) being normally oriented in a substantially vertical attitude, return pipes (434) interconnecting the chambers (433) whereby water to be treated flows in series through the respective chambers (433), gas outlets (443) for supplying gas such as ozone to the respective chambers (433) for bubbling upwardly through water flowing in the chambers (433) and creating a foam at the upper surface of water in the chamber (433) and means (440) for collecting the foam.

IPC Classes  ?

• C02F 1/24 - Treatment of water, waste water, or sewage by flotation
• C02F 1/40 - Devices for separating or removing fatty or oily substances or similar floating material
• C02F 1/74 - Treatment of water, waste water, or sewage by oxidation with air
• C02F 1/78 - Treatment of water, waste water, or sewage by oxidation with ozone
• C02F 103/44 - Nature of the water, waste water, sewage or sludge to be treated from vehicle washing facilities